Shadow the Hedgehog (シャドウ・ザ・ヘッジホッグ, Shadō Za Hejjihoggu?) is an anti hero and the arch rival of Sonic the Hedgehog. Created as "The Ultimate Life Form" by Professor Gerald Robotnik, Shadow is indestructable, however that doesn't mean that he does not feel pain, and that doesn't mean that he cannot be killed. Shadow, being the ultimate lifeform, was created in a condition that causes him to never age. Since his debut, Shadow has appeared in a multitude of games, television shows, and comic books. His past was almost a complete mystery until the game Shadow the Hedgehog revealed the events surrounding his creation. In contrast to Sonic, Shadow is typically portrayed as a tortured anti-hero, or a renegade who can just as easily serve the forces of evil as those of good. Though lately, he has done absolutely no evil, only good, making him a hero. However, he does what he needs to do to accomplish what he knows to be right. So overall, Shadow could be considered a die-hard hero. According to an official poll, Shadow is the second most popular character in the series, second to none but Sonic himself.[1]